Declension table of ?rissu

Masculine	Singular	Dual	Plural
Nominative	rissuḥ	rissū	rissavaḥ
Vocative	risso	rissū	rissavaḥ
Accusative	rissum	rissū	rissūn
Instrumental	rissunā	rissubhyām	rissubhiḥ
Dative	rissave	rissubhyām	rissubhyaḥ
Ablative	rissoḥ	rissubhyām	rissubhyaḥ
Genitive	rissoḥ	rissvoḥ	rissūnām
Locative	rissau	rissvoḥ	rissuṣu

Compound rissu -

Adverb -rissu